A Dashing widget for displaying the number of visitors to your website over a specified timeframe, as reported by Google Analytics
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| class Person | |
| def initialize(attributes) | |
| attributes.each do |attribute_name, attribute_value| | |
| ##### Method one ##### | |
| # Works just great, but uses something scary like eval | |
| # self.class.class_eval {attr_accessor attribute_name} | |
| # self.instance_variable_set("@#{attribute_name}", attribute_value) | |
| ##### Method two ##### | |
| # Manually creates methods for both getter and setter and then |
In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:
http://techcrunch.com/2007/08/11/facebook-source-code-leaked/
It became a big deal:
http://www.techmeme.com/070812/p1#a070812p1
The two files are index.php (the homepage) and search.php (the search page)
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| def valid? version | |
| pattern = /^\d+\.\d+\.\d+(\-(dev|beta|rc\d+))?$/ | |
| raise "Tried to set invalid version: #{version}".red unless version =~ pattern | |
| end | |
| def correct_version version | |
| ver, flag = version.split '-' | |
| v = ver.split '.' | |
| (0..2).each do |n| | |
| v[n] = v[n].to_i |
NewerOlder
